Regioselective 1,4-trifluoromethylation of α,β-unsaturated ketones via a <i>S</i>-(trifluoromethyl)diphenylsulfonium salts/copper system
作者:Satoshi Okusu、Yutaka Sugita、Etsuko Tokunaga、Norio Shibata
DOI:10.3762/bjoc.9.257
日期:——
Regioselective conjugate 1,4-trifluoromethylation of alpha,beta-unsaturated ketones by the use of shelf-stable electrophilic trifluoromethylating reagents, S-(trifluoromethyl)diphenylsulfonium salts and copper under mild conditions is described. A wide range of acyclic aryl-aryl-enones and aryl-alkyl-enones were converted into beta-trifluoromethylated ketones in low to moderate yields.
描述了在温和条件下使用货架稳定的亲电三氟甲基化试剂、S-(三氟甲基)二苯基锍盐和铜对 α, β-不饱和酮进行区域选择性共轭 1,4-三氟甲基化。范围广泛的无环芳基-芳基-烯酮和芳基-烷基-烯酮以低到中等的产率转化为 β-三氟甲基化酮。